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Finding the Fourth Proportional to 201,220,000.90, 301,830,001.35 and 201,220,000.90

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Solution

The fourth proportional to 201,220,000.90, 301,830,001.35 and 201,220,000.90 is: 301,830,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,220,000.90 : 301,830,001.35 = 201,220,000.90 : x
  2. Step 2: Convert to fraction form
    201,220,000.90/301,830,001.35 = 201,220,000.90/x
  3. Step 3: Cross multiply
    201,220,000.90x = 301,830,001.35 × 201,220,000.90
  4. Step 4: Simplify right side
    201,220,000.90x = 60,734,233,143,294,008
  5. Step 5: Solve for x
    x = 60,734,233,143,294,008/201,220,000.90
  6. Step 6: Final answer
    x = 301,830,001.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.